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Lifo > Les rapports de recherche du LIFO en 2016

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Les rapports de recherche du LIFO en 2016


RR-2016-01 Projet scientifique de la fédération Informatique Centre Val-de-Loire (ICVL)
Mirian Halfeld Ferrari Alves (LIFO) et Agata Savary (LI)
Date : 2016-09-07
Résumé Télécharger

RR-2016-02 Querying Semantic Graph Databases in View of Constraints and Provenance
Jacques Chabin, Mirian Halfeld Ferrari, Thanh Binh Nguyen
Date : 2016-07-07
Résumé Télécharger


Résumés des rapports de recherche


RR-2016-01 Projet scientifique de la fédération Informatique Centre Val-de-Loire (ICVL)
Mirian Halfeld Ferrari Alves (LIFO) et Agata Savary (LI)
Résumé :
Mot(s) Clé(s) :

RR-2016-02 Querying Semantic Graph Databases in View of Constraints and Provenance
Jacques Chabin, Mirian Halfeld Ferrari, Thanh Binh Nguyen
Résumé : This paper focus on query semantics on a graph database with constraints defined over a global schema and confidence scores as- signed to the local data sources (which compose a distributed graph instance). Our query environment is customizable and user-friendly: it is settled on the basis of data source confidence and user’s quality re- strictions. These constraints are on queries not on sources. Inconsistent data is filtered, allowing the production of valid results even when data quality cannot be entirely ensured by sources. We elaborate on the pro- cess of validating answers to the queries against positive, negative and key constraints. Our validator can interact with divers lower-level query evaluation methods.
Mot(s) Clé(s) : semantic data graph, constraint, personalization, provenance